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Jet-CO alignments in the environments high-z radio galaxies

Published online by Cambridge University Press:  21 March 2017

Bjorn Emonts
Bjorn Emonts*
Affiliation:
Centro de Astrobiología (CSIC-INTA), Ctra de Torrejón a Ajalvir, km 4, 28850 Torrejón de Ardoz, Madrid, Spain
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Abstract

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In the outskirts of massive high-redshift radio galaxies, powerful radio-jets often interact with ambient warm Lyα-emitting gas. We present the discovery of luminous reservoirs of cold molecular gas in these environments, based on CO(1-0) observations with the Australia Telescope Compact Array. The CO-emission is aligned with the radio jets, and found tens of kpc outside the host galaxy. These molecular gas reservoirs have CO luminosities in the range of those found in submm-galaxies (L'CO ~ 4-9 × 1010 K km/s pc2), but they lack any near-infrared counterpart in deep Spitzer imaging. These results suggest that jet-triggered feedback takes place in the circum-galactic environment of high-z radio galaxies. We prefer the interpretation that the CO-emitting gas is formed when the propagating jets enrich, shock and cool pre-existing dusty halo gas. We further argue that sensitive low-surface-brightness CO observations, using radio interferometers in very compact array-configurations, are essential to study the role of the cold molecular medium in the outskirts of massive high-z galaxies.

Keywords

galaxies: halosactivejetsintergalactic mediumtechniques: interferometric
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , Symposium S321: Formation and Evolution of Galaxy Outskirts , March 2016 , pp. 348 - 350
Copyright
Copyright © International Astronomical Union 2017 

References

Carilli, C. L., Röttgering, H. J. A., van Ojik, R., et al. 1997, ApJS, 109, 1 Google Scholar
Chambers, K. C., Miley, G. K., & van Breugel, W. 1987, Nature, 329, 604 Google Scholar
De Breuck, C., Seymour, N., Stern, D., et al. 2010, ApJ, 725, 36 Google Scholar
Drouart, G., De Breuck, C., Vernet, J., et al. 2014, A&A, 566, A53 Google Scholar
Emonts, B. H. C., Norris, R. P., Feain, I., et al. 2014, MNRAS, 438, 2898 Google Scholar
Emonts, B. H. C., Mao, M. Y., Stroe, A., et al. 2015a, MNRAS, 451, 1025 Google Scholar
Emonts, B. H. C., De Breuck, C., Lehnert, M. D., et al. 2015b, A&A, 584, A99 Google Scholar
Kirkpatrick, C. C., McNamara, B. R., & Cavagnolo, K. W. 2011, ApJL, 731, L23 CrossRefGoogle Scholar
Klamer, I. J., Ekers, R. D., Sadler, E. M., & Hunstead, R. W. 2004, ApJL, 612, L97 Google Scholar
McCarthy, P. J., van Breugel, W., Spinrad, H., & Djorgovski, S. 1987, ApJL, 321, L29 Google Scholar
Miley, G. & De Breuck, C. 2008, A&ARv, 15, 67 Google Scholar
Nesvadba, N. P. H., Neri, R., De Breuck, C., et al. 2009, MNRAS, 395, L16 Google Scholar
Papadopoulos, P., Ivison, R., Carilli, C., & Lewis, G. 2001, Nature, 409, 58 Google Scholar
Pentericci, L., Van Reeven, W., Carilli, C. L., et al. 2000, A&AS, 145, 121 Google Scholar
Pentericci, L., McCarthy, P. J., Röttgering, H. J. A., et al. 2001, ApJS, 135, 63 Google Scholar
Stevens, J. A., Ivison, R. J., Dunlop, J. S., et al. 2003, Nature, 425, 264 Google Scholar
Villar-Martín, M., Vernet, J., di Serego Alighieri, S., et al. 2003, MNRAS, 346, 273 Google Scholar
Wylezalek, D., Galametz, A., Stern, D., et al. 2013, ApJ, 769, 79 Google Scholar